A family of four from Massachusetts who were killed when a bus crashed into multiple vehicles in Virginia were traveling to a wedding at the time. The family wedding will go forward Sunday in South Carolina. But a relative says it also will be a time to mourn the loss of Dmitri and Ecaterina Doncev and their two children, Emily and Mark. A fifth person died in Friday's crash as well: 25-year-old Priscilla Mafalda of Massachusetts. The bus driver is in custody and has been charged with involuntary manslaughter. Police and the National Transportation Safety Board are investigating.